Display screen with a graphical user interface



FIG. 1 is a first image for a display screen with a graphical user interface showing our new design;

FIG. 2 is a front view of the design shown in FIG. 1, shown enlarged for clarity of illustration; and,

FIG. 3 is a second image thereof, shown enlarged for clarity of illustration.

The appearance of the image transitions between the images shown in FIGS. 2-3. The process or period in which one image transitions to another forms no part of the claimed design. The broken lines showing of the display screen and portions of the user interface form no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 